Device for tapping internal thread of hardware

Abstract

The utility model belongs to the technical field of tapping machine, especially relate to a hardware in -mold stamping tapping device, including upper die assembly, lower die assembly, material band, tapping mechanism, buoyancy mechanism and drive mechanism, upper die assembly goes down, overcomes spring force and presses down, whole buoyancy board is pressed down together, material band is firmly clamped between the material stripping plate and buoyancy board. Tapping mechanism starts work, after tapping is completed, tapping head rotates and exits the thread hole. The upper die of puncher starts to go up, and the material stripping plate leaves the buoyancy board. The buoyancy board is stably lifted upwards under the reset force of the lower spring, and the material band that has completed tapping is lifted, so that it is separated from the fixing part of the lower die. The synchronization of stamping and tapping is completed, and the production rhythm only depends on the speed of the puncher itself. The two processes are combined into one, the production efficiency can be improved several times, and it is especially suitable for large-scale continuous production.

Description

Technical Field

[0001] This utility model belongs to the field of tapping machine technology, and in particular relates to an in-mold stamping tapping device for hardware parts. Background Technology

[0002] In traditional metal stamping manufacturing, stamping and threading (tapping) are typically two independent and separate processes. First, metal sheets are punched, stretched, and bent using a stamping machine and dies to form the desired part shape (strip or individual workpiece). These semi-finished products are then transferred to a dedicated tapping machine (such as a drilling machine or tapping machine) for threading. This production method has several inherent drawbacks: First, it is inefficient, as parts require multiple steps including clamping, positioning, machining, and unloading, and must be transferred between different machines, consuming a significant amount of time. Second, machining accuracy is difficult to guarantee; positioning errors are easily generated during secondary clamping, leading to deviations in the relative positions of the threaded holes and the reference holes on the stamped part, resulting in a lower product yield. Third, production and floor space costs are high, requiring investment in and maintenance of multiple machines and a larger workforce. Utility Model Content

[0003] The purpose of this utility model is to provide an in-mold stamping and tapping device for hardware parts, which aims to solve the technical problems of low production efficiency and large error rate in the existing technology.

[0004] To achieve the above objectives, this utility model provides an in-mold stamping and tapping device for hardware parts, including...

[0005] The upper mold assembly includes, from top to bottom, an upper mold base, an upper mold pad, and an upper template;

[0006] The lower mold assembly includes, from bottom to top, a lower mold base, a lower mold pad, and a lower template;

[0007] The material strip runs horizontally between the upper template and the lower template;

[0008] The tapping mechanism has its body spanning between the upper template and the lower template, and the tapping head of the tapping mechanism corresponds to the processing station of the material strip;

[0009] The floating mechanism includes a vertically movable floating plate, which is disposed above the lower template and is used to support the material strip;

[0010] The drive mechanism is located inside the lower mold assembly. When the upper mold assembly moves downward, it first drives the floating mechanism to move the strip down synchronously and press it to a preset height. Then, the tapping mechanism starts to tap the stationary strip.

[0011] Furthermore, the buoyancy mechanism also includes a buoyancy plate pad and a spring, the spring being supported below the buoyancy plate to provide it with a restoring elastic force; the buoyancy plate is connected to the lower template via guide posts to ensure its vertical movement.

[0012] Furthermore, the driving mechanism includes a stripper plate disposed on the upper mold assembly. When the upper mold assembly moves downward, the stripper plate preferentially contacts and presses against the floating plate.

[0013] Furthermore, the lower mold assembly is provided with a clearance position to provide movement space for the tapping mechanism.

[0014] Furthermore, the buoyancy plate is provided with a plurality of buoyancy pins, as well as pin holes for mounting and positioning the buoyancy pins and screw holes for fixing them.

[0015] Furthermore, the tapping mechanism is connected and fixed to the upper mold assembly and the lower mold assembly via the upper mold mounting plate and the lower mold mounting plate, respectively.

[0016] The above-mentioned technical solutions of the in-mold stamping and tapping device for hardware parts provided in this embodiment of the utility model have at least one of the following technical effects:

[0017] 1. The stamping and tapping are completed simultaneously, and the production cycle depends only on the speed of the stamping machine itself. Combining the two processes into one can increase production efficiency several times, which is especially suitable for large-scale continuous production.

[0018] 2. Through the unique design of the symmetrical and uniform pressing of the floating plate by the stripper plate, it is ensured that the strip is firmly pressed at the preset height at the moment of tapping, forming a stable "processing platform". Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A cross-sectional view of the in-mold stamping and tapping device for hardware parts provided in this embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the tapping process of the in-mold stamping and tapping device for hardware parts provided in this embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the floating plate of the in-mold stamping and tapping device for hardware parts provided in this embodiment of the utility model.

[0023] The following are the labeling elements in the figure:

[0024] 100. Upper mold assembly; 110. Upper mold base; 120. Upper mold pad; 130. Upper template;

[0025] 200. Lower mold assembly; 210. Lower mold base; 220. Lower mold backing plate; 230. Lower template;

[0026] 300. Tapping mechanism; 310. Workstation to be processed; 320. Upper mold mounting plate; 330. Lower mold mounting plate; 340. Tapping head;

[0027] 400. Lifting mechanism; 410. Lifting plate; 420. Lifting plate pad; 430. Spring; 440. Guide post; 450. Lifting pin; 460. Pin hole; 470. Screw hole;

[0028] 500. Drive mechanism; 510. Stripper plate; 520. Clearance position;

[0029] 600, material strip. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-3, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-3 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0034] In one embodiment of this utility model, an in-mold stamping and tapping device for hardware parts is provided, including...

[0035] The upper mold assembly 100 includes an upper mold base 110, an upper mold pad 120, and an upper template 130 arranged sequentially from top to bottom.

[0036] The lower mold assembly 200 includes a lower mold base 210, a lower mold pad 220, and a lower mold template 230 arranged sequentially from bottom to top.

[0037] The material strip is 600, and it runs horizontally between the upper template 130 and the lower template 230;

[0038] The tapping mechanism 300 has its body spanning between the upper template 130 and the lower template 230, and the tapping head 340 of the tapping mechanism 300 corresponds to the processing station 310 of the strip 600.

[0039] The floating mechanism 400 includes a floating plate 410 that can move up and down. The floating plate 410 is disposed above the lower template 230 and is used to support the material belt 600.

[0040] The drive mechanism 500 is located inside the lower mold assembly 200. When the upper mold assembly 100 moves downward, the drive mechanism 500 first drives the floating mechanism 400 to move the material strip 600 down synchronously and press it to the preset height. Then the tapping mechanism 300 starts to tap the stationary material strip 600.

[0041] Furthermore, the buoyancy mechanism 400 also includes a buoyancy plate 410 pad and a spring 430. The spring 430 is supported below the buoyancy plate 410 to provide it with a restoring elastic force. The buoyancy plate 410 is connected to the lower template 230 through a guide post 440 to ensure its vertical movement.

[0042] Furthermore, the drive mechanism 500 includes a stripper plate 510 disposed on the upper mold assembly 100. When the upper mold assembly 100 descends, the stripper plate 510 preferentially contacts and presses against the floating plate 410.

[0043] Furthermore, the lower mold assembly 200 is provided with a clearance 520 to provide movement space for the tapping mechanism 300.

[0044] Furthermore, the buoyancy plate 410 is provided with a plurality of buoyancy pins 450, as well as pin holes 460 for mounting and positioning the buoyancy pins 450 and screw holes 470 for fixing.

[0045] Furthermore, the tapping mechanism 300 is connected and fixed to the upper mold assembly 100 and the lower mold assembly 200 via the upper mold mounting plate 320 and the lower mold mounting plate 330, respectively.

[0046] Operation flow: The upper die of the stamping machine is in the open state, and the floating plate 410 is in the raised position under the support of the spring 430 below it. The material strip 600 is accurately conveyed into the die through an external feeding device, and is initially positioned and lifted by the positioning mechanism such as the floating pin 450 on the upper surface of the floating plate 410.

[0047] As the upper die of the stamping press begins its downward movement, the stripper plate 510, fixed to the upper die, first contacts the lifting plate 410. The stripper plate 510 continues its downward movement, overcoming the force of the spring 430, and symmetrically and evenly presses the entire lifting plate 410 along with the strip 600 on it downwards. This process ensures that the strip 600 will not warp due to unilateral force. The lifting plate 410 is smoothly pressed to a preset, stable height (ensuring this by the die structure). At this point, the strip 600 is firmly clamped between the stripper plate 510 and the lifting plate 410, achieving precise positioning and solid support, preparing for tapping.

[0048] The upper die continues to descend, and after the strip 600 is fully compressed, the tapping mechanism 300 begins to operate. The drive unit of the tapping machine (usually linked to the die movement via gears, racks, or a servo motor) starts, driving the tapping head 340 to rotate and feed forward, performing tapping on the firmly fixed strip 600. During this process, specially designed clearance positions 520 on the die (such as clearance screws and clearance grooves) provide the necessary space for the relevant movements of the tapping machine body, preventing collisions with other parts of the die.

[0049] After tapping is completed, the tapping head 340 rotates and exits the threaded hole. The upper die of the stamping press begins to rise, and the stripper plate 510 moves away from the lifting plate 410. Under the restoring force of the lower spring 430, the lifting plate 410 is smoothly lifted upward, lifting the tapped strip 600 and detaching it from the fixed part of the lower die. Subsequently, the feeding device operates again, advancing the strip 600 one station forward, preparing for the next work cycle, including the stamping and tapping of the next part.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hardware part in-mold stamping and tapping device, characterized in that, include The upper mold assembly includes, from top to bottom, an upper mold base, an upper mold pad, and an upper template; The lower mold assembly includes, from bottom to top, a lower mold base, a lower mold pad, and a lower template; The material strip runs horizontally between the upper template and the lower template; The tapping mechanism has its body spanning between the upper template and the lower template, and the tapping head of the tapping mechanism corresponds to the processing station of the material strip; The floating mechanism includes a vertically movable floating plate, which is disposed above the lower template and is used to support the material strip; The drive mechanism is located inside the lower mold assembly. When the upper mold assembly moves downward, it first drives the floating mechanism to move the material strip down synchronously and press it to a preset height. Then, the tapping mechanism starts to tap the stationary material strip.

2. The in-mold stamping and tapping device for hardware parts according to claim 1, characterized in that, The buoyancy mechanism also includes a buoyancy plate pad and a spring. The spring is supported below the buoyancy plate and provides it with a restoring force. The buoyancy plate is connected to the lower template through guide posts to ensure its vertical movement.

3. The in-mold stamping and tapping device for hardware parts according to claim 1, characterized in that, The driving mechanism includes a stripper plate disposed on the upper mold assembly. When the upper mold assembly moves downward, the stripper plate preferentially contacts and presses against the floating plate.

4. The in-mold stamping and tapping device for hardware parts according to claim 1, characterized in that, The lower mold assembly is provided with a clearance position to provide movement space for the tapping mechanism.

5. The in-mold stamping and tapping device for hardware parts according to claim 1, characterized in that, The buoyancy plate is provided with a number of buoyancy pins, as well as pin holes for mounting and positioning the buoyancy pins and screw holes for fixing.

6. The in-mold stamping and tapping device for hardware parts according to claim 1, characterized in that, The tapping mechanism is connected and fixed to the upper mold assembly and the lower mold assembly via the upper mold mounting plate and the lower mold mounting plate, respectively.

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